Description

IC V REG LINEAR V
The LM117 and LM317-N series of adjustable 3-pin positive voltage regulators are capable of supplying in excess of 1.5 A over a 1.25-V to 37-V output range and a wide temperature range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. The LM117 and LM317-N offer full overload protection such as current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected. Typically, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios that are difficult to achieve with standard 3-terminal regulators. Because the regulator is floating and detects only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not exceeded. That is, avoid short-circuiting the output. By connecting a fixed resistor between the adjustment pin and output, the LM117 and LM317-N can be also used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground, which programs the output to 1.25 V where most loads draw little current. For applications requiring greater output current, see data sheets for LM150 series (3 A), SNVS772, and LM138 series (5 A), SNVS771. For the negative complement, see LM137 (SNVS778) series data sheet.

Specifications

Fixed Output Voltage Nom.:

-

Adjustable Output Voltage Min:

1.2V

Adjustable Output Voltage Max:

37V

Input Voltage Min:

4.2V

Input Voltage Max:

40V

Product Range:

-

Output Current:

1.5A

Output Type:

Adjustable

Linear Regulator Case Style:

TO-220

No. of Pins:

3Pins

Operating Temperature Min:

0°C

Operating Temperature Max:

125°C

Automotive Qualification Standard:

-

MSL:

-

SVHC:

No SVHC (27-Jun-2018)

No. of Outputs:

1Outputs

Operating Temperature Range:

0°C to +125°C

Output Voltage Adjustable Range:

1.2V to 37V

Output Voltage Max:

37V

Output Voltage Min:

1.2V

Primary Input Voltage:

40V

Supply Voltage Min:

3V

Termination Type:

Through Hole

Voltage Regulator Type:

Adjustable Positive

Alternate Descriptions

Avnet America

Standard Regulator Pos 1.2V to 37V 1.5A 3-Pin(3+Tab) TO-220 Rail

Avnet Europe

Standard Regulator Pos 1.2V to 37V 1.5A 3-Pin(3+Tab) TO-220 Rail

Texas Instruments

1.5-A adjustable output linear regulator

Distrelec

.96

Conrad

Integrated circuits from leading manufacturers. Please read our extensive documentation which is free to download.